Sheet cutting and creasing press



Dec. 31, 1946.

-A.v J. `EVERS SHEET CUTTING AND cREAsING 'PRESS original Filed No. 4,1943 14 sheets-sheet 1 Y n w uio etu/ E IN V EN TOR.

SHEET CUTTING AND GREASING PRESS 14 Sheets-Sheet 2 Original Filed Nov.4, 1943 INVENTOR.

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Dec. 31, 1946. A. J. EvERs 2,413,554

SHEET CUTT]?NG AND CREASING PRESS 'original Filed Nov.` 4, 41943 Y14sheets-sheet s ANW..

. INVENTOR.

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Dec. 3l, 1946. I A. J. EVERS SHEET CUTTING AND CREASING PRESS OriginalFiled Nov. 4, 1943 14 Sheets-Sheet 5 IN V EN TOR.

Dea. 3l, 1946.l A. J. EVERS I SHEET CUTTING AND CREASING PRESS 14sheets-sheet s y Original Filed Nov. 4, 1943 ,Ilf 3L 394% A. J. Evi-:Rs

SHEET CUTTING AND CREASING PRESS original Fild Nov. 4, 1943 14Sheets-Sheet '7 IN V EN TOR.

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SHEET CUTTING AND CREASING PRESS 14 Sheets-Sheet 8 Original Filed Nov.4, 1945 Dec. 31, 1946. A. J. EvERs SHEET C-UTTINGQAND CREASING FRESS 14sheets-'sheet 9 original Filed Nov. 4, A1943 Dec. 31, 1946.

A. ,1. EvERs SHEET CUTTING AND CREASING PRESS Original Filed Nov. 4,1943 14 Sheets-Sheet 10 Dec. 31, 1946. A. J. EvERs 2,413,554

j SHEET CUTTING AND CREASING PRESS Original Filed Nov. 4, 1943 14Sheets-Sheet l1 Il vvmron.

A. J. EVERS SHEET CUTTING AND CREASING PRESS original Filed Nov, 4. 1943l14 sheets-sharm Dec. 31, 1946. A 1 EV'E'R'S SHEET CUTTING. ANDVvcxzmsnmV rnEss 14 Sheets-Sheet 13 Original Fi1ed Nov'. L4, 1945IIIIIIIIIIII ll IN V EN TOR.

A. J.' EvERfs SHEET CUTTING AND CREASING PRESS Original Filed Nov. 4,1943 14 Sheets-Sheet 14 lll INVENTOR. y

Psanisd Dee. 31, 194s v, y v 2,413,554

UNI-'rsp STATES, PATENT .or-'rica V 413.554-

snaar cuir'rmo Ann carissimi rasss n y Arthur J. Evers, nrookiynmr.,signor to c. n. Cottrell a: Sons Company, Westerly, B. I., a corporationof Delawarel Original application November 4, 194,3, Serial No.l

Divided and this application Deceniber 21, 1945, Serial No. 638,388

. l This invention is directed to a novel method of cutting and creasingsheets, as. for instance. y

l cally, the several stages through which the sheets pass from theblanks to the finished or cut and creased products; v l

Fig. 6 represents a side elevation of so much of the machine thatincludes the invention;

Fig. 7 represents a iront elevation at the delivery end of the machine;

Fig. 8 represents a detail iront elevation of the upper portion oi thedelivery end, on an enlarged 2 Claims. (Cl. 164-19) Fig. 24 represents asimilar view showing the gripperretracted: V

Fig. 25 represents a vertical section showing the spring means foryieldingly holding the gripper actuating shaft in both of its positions;

. Fig. 26 represents a detail plan view partly in section of a portionof the carriage showing the suction devices applied thereto;`

Fig. 27 represents a longitudinal section taken in the plane of the line'XXVII-XXVII of` Fig.

Fig. 28 represents a detail side elevation of the manifold and adjacentmechanism for controlling the actuation oi the suction devices, on ascale similar to that` shown in Figs. 6 to 20 inclusive;

Fig. 29 represents a detail plan view oi the same scale; partly insection;

Fig. 9 represents a detail side elevation oi the palr'lgx; :gents adetail end View 0f the 8am@ i sheet handling carriage dr ving means andthe 2o j Fig. sirepresents s detail side elevation c: the

reciprocating upper platen partly in section:

Fig. 10 represents a detail side elevation of the carriage drivingmeans;

Fig. ll'represents a detail vertical section taken in the plane of theline XI-Xi oi- Fig. 10, looking in the direction of the arrows;

Fig. 12 represents a detail vertical section taken in the plane of theline XII-XII of. Fig. il, looking in the direction of the arrows;

Figs. 13 and 14 represent a detail longitudinal section through thecarriage showing the means for raising and lowering the same;

Fig. 15 represents a detail vertical section taken in the plane of theline XV--XV of Fig. 13,1001:- ing in the direction of the arrows? l Fig.16 represents a detail longitudinal section similar to Fig. 13 showingthe parts in another position and carriage raised;

Fig. 17 represents a detail plan view of certain of the parts shown inFigs. 13 and 15:

Fig. i8 represents a detail longitudinal section tion oi' the arrows andshown on a greatly enlarged scale:

Fig. represents a detail end elevation of a portion ofthe machine partlyin section and on a scale similar to that shown in Figs. 28'to 33inclusive, and showing the actuating mechanism plate 9 which coacts withthe die 'I Ato cut and' o! the reciprocating platen:

Fig. 36 represents a detail plan view oi the gearing and adjacent partsfor raising and lowering the upper platen; and

Fig. sv represents s detail vertical section taken m of in the plane ofthe line XXXVII- Fig. 36, looking in the direction of the arrows.

The press trame comprises generally the base member I andthe framemembers 2 and I.

'I'he pile oi' blank sheets at the feed or rear end of the press isdenoted by l and the pile of cut and creased sheets at the front ordelivery end oi the press is denoted by I.

The stationary lower platen t ot the press car, ries the cutting die 1which die is arranged to cut and crease at one operation. blank sheetsoi various shapes and sizes.

' The movable upper platen! carries the cutter crease the blank sheetsas theyar'e successively ted. into the press. This upper platen 8 isconreciprocating movements by the following elements: a two-part lboxcam 55,I is mounted to oscillate with the shaft 52 and arranged toreceive a stud or roller 52 eccentric-ally carried by The followingmeans are provided for vertically reciprocating the upper platen 8 at avaria-ble speed so that the platen may be speeded up as it nears itssheet cutting and creasing position and slowed down after it leaves saidposition, thereby allowing suillcient time for the reciprocation of thesheet handling carriage between the platens. An electric motor I4 (seeFig. 7) has its shaft i5 provided with a gear I5 which meshes wi-th agear I1 on a cross shaft'IB which is provided with two gears I9 whichmesh with their two gears 20 loosely mounted on the crank shaft 2| (seeFigs. 36 and 3'1). This crank shaft 2| is provided with'crank discs 22at its ends. These ycrank discs are .provided with spherical headed pins23 engaging links 24 pivoted at 25 .to arms 25 projecting from the uppermembers 21 of toggle levers pivoted at 28 to the base frame (see Fig.35). The lower members 29 of the toggle levers are pivoted .at 35 to thelower cross heads I2 of Ithe upper platen 5. The cross shaft |8 is alsoprovided with two gears 32 which mesh with gears 33 on cam shafts 34(see Fig. 36).

A gear fast on the shaft 2| meshes with a pinion |3| fast on a shaft |32mounted in a swingingl support |33 which is oscillated on the shaft 2|by means of links |34 eccentrically pivoted at on the gears 33. Gears|35 on Ithe shaft |32 mesh with gears |31 carried by the stud shafts |35on the swingingsupport |33 which gears |31 mesh with gears |35 looselymounted on the shaft2I. v

A track is provided for guiding the sheet handling carriage in itsreciprocating movement. which track is raised and lowered by theelements connected to the cross shaft I8, as follows:

One of the cam shafts 34 (see Fig. 13) carries a box cam 35 whichengages one arm 35 of a rock lever pivoted at 31, vthe other arm 35 ofwhich rock lever is connected by a link 39 with an arm 4|) of a rockshaft 4|. The arms 42 of said rock lever are pivoted Ito theirrespective side rails 43 of the carriage track. These side rails 43 ofthe track are also supported at intervals by pairs of rock arms 44 and45.

The sheet handling carriage 45 (as it is raised and lowered with itstrack side rails 43) is shown as reciprocated on the track rails 43 bythe following elements (see Figs. 16 and 1'1): a pair of rack bars 41areslldably mounted in guides 45, which rack bars are provided withyokes 43 to receive studs or rollers 55 carried on the opposite sides ofthe carriage 45. These two rack bars 41 are reciprocated by two gears 5|fast on an oscillating cross shaft 52 (see Figs. l0, 11 and 12)` whichcarries a gear 53 meshing with a gear 54 mounted on a stud shaft 55. Apinion 55 which is integral with the gear 54 meshes with a verticallydisposed rack bar 51 mounted to slide in a bracket 58 carried by thepress frame 3.

This rack bar 51 (see Figs. 9 and 10) is reciprocated by means of an arm53 which is one of the shafts 34.

The`sheet handling carriage 45 (see Figs. 9

and 10) is retarded and accelerated during itsv the 'gear 54. The shapeand relative positions of the two parts 50 and 5| of this `oscillatingcam Serve to control the rotary speed of the shaft 52 during itsoscillations and hence .the variable sliding movement of the rack bars41 through th pair of gears 5| on the said shaft 52.

The throw of the arm 53 which is carried by the shaft 34 controls thelength of the reciprocating movement of the rack bar 51 and thereby thenumber of rotations (in .the present instance about two and one-halfrotations) in each direction of the pinion andthe gear 54 which gearcarries lthe stud or roller 52. The oscillating movement of the stud orroller 52 causes it to alternately enter the two parts 50, 5| of the boxcam and thus cause the cam to oscillate the shaft 52 with a variablerotative speed in .both direc'- .tlons. lThis oscillating movement ofthe shaft 52 will cause its gears 5| to reciprocate the two horizontallyY disposed rack bars 41 along their guides 45.

The means on the sheet handling carriage 45 for advancing a newly fedblank sheet into the press and simultaneously delivering a previouslycut sheet. out of the press, during one stroke of the carriage comprisessheet grippers and suction devices respectively.

The means on .the sheet handling carriage 45 for advancing .a newly fedblank sheet from the feed pile 4 into .the press .comprises thefollowingsheet from the pile 4 as Ithe carriage reaches the end of its rearwardor return stroke and to release the sheet as the carriage reaches theend of its forward or advance stroke.

The means for opening and closing these grippers 53, 54 comprises thefollowing elements: (see Figs. 18 to 24) the lower movable :lawsv 54 ofthese grippers are connected by links 55 to spring pressed bars 5.5slidable in the tube 51 which extend lengthwise of the carriage. Theforward ends of these bars 55 are connected by links 55 to arms 55 fixedto a crossrock shaft 10 mounted at the forward end of the carriage. A

cam operated lever 1| is also fixed to the rock shaft 10, one arm 12 ofsaid lever carrying a a lengthwise movable bar 15 slidable in hangers 15depending from the track rail 43, which cams are located in' position toengage their respective studs or rollers 13 and 15 to rock the lever 1|to carried by close the grippers 53, 54 onto the newly fed sheet at theend of the return stroke of the carriage and to open the grippers at theend of the forward stroke of the carriage. Spring means 15*- sex'ves toyieldingly hold the gripper actuating shaft 15 in both of its positions.Y

' One arm 55 of a rock lever pivoted on the cross shaft 5| is connectedby a link 52 to the bar 15, the other arm 53 of which lever is connectedby a link 54 to the uprising frame 55 of a rock lever pivoted at 55, thedepending arm 51 -of which the lever is engaged by a box cam 55 fixed tocross shaft 34. f

Suction devices on the lower platen are provided for holding the newlyfed sheets against displacement on the die 1 during the cutting and ycreasing operation. Suction devices are also provided on the sheethandling carriage for lifting the cut and creased sheet fromv the dieand conveying it to a point over the delivery pile simultaneously withthe feeding' of a new sheet intothe press; means being provided forcontrolling the operation of the suction devices at the proper llilcommunication with branch pipes 86 and 86* I by bridge ports 81 and 91*in valves 88. 88* carried by a bar 88 operated at the proper times by arock lever |00, |0| pivoted at |02 and connected by 'a link |08 toa rocklever- |04. |05 pivoted at |08, which rock lever is connected by a link|01 to the uprising arm |08 of a rock lever pivoted at |08, the otherarm||0 of which lever carries a stud or roller .engaged by a box cam ||2fixed to the shaft 84. The above mentioned branch pipes 96* areconnected through pipes ||8, ||4,to a lower manifold ||6. This lowermanifold is provided with vertical branches ,H6 which are connected byflexible tubes ||1 and elbows ||8 to horizontal passages ||8 in thelower platen 6. Ports in the lower platen lead to suction devices |2| inthe die 1.

The branch pipes 86 are connected 'through pipes |22 and elbows |28 tospaced horizontal pipes |24 extending lengthwise of the carriage 46. Thebottom walls of these pipes |24 are in open 4communication at all timeswith the suction devices |26.

The cutter plate 8 is herein shown as secured by bolts |26 and keepers|21 to the upper platen v8. To prevent the bucklingl of the cutter platesuction may be exertedv thereon at all times through a pipe |28 leadingfrom the main'exhaust pipe 82 to a suction chamberl |29 in the lowerface of the upper platen 8.l I

In operation, any well known or approved shee feeding mechanism, notshown herein, may be employed for bringing the blank sheets from the tomovethe previously cut and creased sheet out of the press. As thecarriage approaches the end of its forward movement it will be loweredby the lowering of the track to bring the newly fed sheet into itsproper position on the die and the previously cut and creased sheet toits position over the delivery pile 6. The suction devices |2| on thedie will then be operated to hold the newly presented sheet in positionon the die.

The upper platen 8 at this time has been moved downwardly into positionto cause the die and cutter plate to coact on the newly fed sheet to cutand crease the same, it being understood that the movement of thecarriage is'stopped at this time. p

As it has been previously explained, the variable speed reciprocatingmovement of the carpile 4 into proper end and side register` yto begrasped by the grippers 88, 84 on the rear end of the sheet handlingcarriage 46 at the limit of its rearward or return stroke.

As the carriage is about to start on its variable speed forward stroke,its grippers 63, 64 are clsed by the cam 88 on the cam shaft 84 which isdriven from the `motor |4, thusI causing the grippers to grasp theleading end of the newly fed sheet. The previously cut and creased sheeton the die is released by its suction devices |2| on the die and engagedby the previously cut and creased sheet delivery suction devices |26 onthe carriage.

As the carriage starts on its forward stroke it is riage is accomplished'by the related movements of the shaft |8, gears 82, 88, shaft 34, crankarm 68, rack bar 61, its pinion 66,gear 64, stud or roller 62, "two partoscillating box cam 60, 6|,

gear 58 on oscillating shaft 62, gears 5I and horizontally disposed rackbars 41.

The grippers 63, 64 on the carriage will be opened, Vand retracted afterthe carriage has moved forwardly to complete its stroke thereby bringingthe grippers beyond the advance edge of the newly fed sheet. The suctiondevices |26 on the carriagevwill then be released to permit thepreviously cut and creased sheet to be delivered onto the pile 6.

As the upper platen and the carriage start on their respective returnstrokes the suction devices |2| on the die will still hold the newly fedcut and creased sheet on the die. The grippers 63, 64 on the rear end ofthe carriage will at the same time be raised above the said sheet by theraising of the track on which the carriage reciprocates.` The carriagethen proceeds in its raised position on its return stroke between theupper and lower platens. As the carriage nears the limit of its returnstroke it is lowered by the lowering of the track. This loweringmovement of the carriage will bring its suction devices into contactwith the newly cut and creased sheet and its grippers in position tograsp the leading endv to go down on the sheet for the removal of the`same, at which time suction is started on the devices |23 of thecarriage and cut oil from the suction devices |2| in the die. l

It will be understood that the suction devices on the die and carriageare alternately operated from the box cam ||2 on the shaft 34 throughthe rock lever |08, H0, link |01, rock lever |04, |06, link |03, rocklever |00, |0I, bar 99, connected manifolds 93, 85, pipe 82 and suctionpump 88. In Figs. 1, 2 and 3 the suction devices on `the carriage willbe on andthe suction devices on the die will be om In Figs. 4 andl 5 thesuction devices on the carriage will be ofi riage will cause thegrippers 88, 84 to move the newly fed sheet into the pressand at thesame time cause the suction devicesA |26 on the carriage and the suction.devices on the vdie will be on.

It will -also be understood, from the above description and thedrawings, that the platen operating mechanism. the carriage raising andlowering mechanism, the gripper operating mechanism and lthe mechanismsfor controlling the operation oi the suction devices carried by thelower suction on the preceding cut vand creased sheet Afor removing itfrom the die and delivering the ,2. The method of cutting and creasingsuccessive sheets by the repeated coaction of a die and its cutterplate, which includes feeding a sheet to the die and at the same timeexerting suction on the preceding cut .and creased sheet for removing itfrom the die and delivering the sheet and holding the successive sheetson the die by suction during the cutting and creasing operation.

\ ARTHUR J. EVERS.

